Harken 7311.10 Cruising Jib Reefing & Furling - Manual (Page 27)

Replace Line — Unit 1
Use HFG233 furling line or source a good quality line with good wear
characteristics. Use 9/32" (7 mm) line with break strength exceeding
2500 lbs (1130 kg). Smaller boats or smaller sails may allow
5/16" (8 mm) line.
Replace Line — Unit 2
Use HFG235 furling line or source a good quality line with good wear characteristics. Use 5/16" (8 mm) line with
break strength exceeding 3740 lbs (1700 kg). Smaller boats or smaller sails may allow 3/8" (8 mm) line.
Replace Line — Both
If a larger diameter line is desired, consult with a rigger about using tapered line with a high strength core and cover
removed in forward part of line.
Storage – Mast Down
In areas where it freezes, do not store system where water can accumulate in foils. When water freezes it will rupture
aluminum. Store foils under cover, with grooves facing down or on an angle so water will run out.
Storage/Transporting
Do not store or transport system with drum assembly extending beyond mast. Remove masthead clevis pin and shift
furler up so drum assembly can be strapped securely to mast. Some people remove drum assembly and halyard swivel
for storage and transport.
After Storage or Transport
After storing or transporting unit, clean thoroughly including ball bearings. See instructions above.
Remove Furler
Foils can lock against upper stay terminal when backstay is released. To prevent this loosen foil clamp screws and
lower foil before loosening backstay.
Clean and Lubricate
Keep unit clean. When you wash boat, flush unit with soap
and fresh water. Occasionally lower sail and flush halyard
swivel with soap and fresh water.
At least twice a year unit should be cleaned more thoroughly
by removing line (first note direction of spool) and flushing
bearings with soap and fresh water. After unit has dried,
apply a dry spray lubricant such as McLube ® .
Foils may be cleaned by washing with soap and water. A
scrap of luff tape may be run up foil to scrub inside the
grooves. Foils may be sprayed with McLube ® spray to
reduce friction during sail changes.
Inspect
1) Unit for signs of chafe, wear or damage.
2) Foil clamp screws for signs of loosening. Check headstay tension
for signs of loosening.
3) Swage fitting and lower toggle for signs of stress corrosion.
4) Norseman/Sta-Lok
® terminal/rod terminal for signs of loosening.
5) All screws on unit to be sure they have not loosened.
6) Foil to make sure that it has not dropped into drum assembly.
7) Wire for signs of wear or unraveling.
Maintenance Clean/Inspect/Remove Furler
08/23/10 Unit 1, 2 Cruising 27
WARNING! Periodically inspect items listed
below and any others as necessary. Failure to
inspect can cause an accident, damage to your
vessel, personal injury, or death. See www.
harken.com for additional safety information.